Grading machine



filtent ed et. 1%, 1932 srArss snmmm a. swim, or en, Louisiana enanme mam I Application fled January 2, 1982. Serial No. 584,494.

The invention relates to a grading machine desi primarily for preparing a subgra on which to'lay a concrete or other highway, and it relates more specifically to a grading machine having a rotary grader provided with cutters whlch are adjustable to transversely shape the grade as requlred, giving said grade a transversely convex form, a transversely concave form, or a transversely straight form, as desired. In adjusting the cutters, dificulty has heretofore been eX- perienced and it has been almost impossible to obtain an accurate adjustment. It is one obj ect of my invention however to provide the machine with a templet which enables strictly accurate cutter adjustments to be made.

A further aim is to provide for changing the shape of the templet according to the she c desired for the grade.

at anotherobject is to provide for shifting the templet into operative relationwith the rotary grader when cutter adjustments are to be made, and for shifting said templet to an out-of-the-way position when its use is not required. I

A still further aim is the provision of a construction which is rather simple and in eensive, is easily operated, and long-lived.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, description being accomplished by reference to the accompanyin% drawmg. I

1g. 1 18 a longitudinal sectional view throu h a sub-grading machine improved in accor ance with the present invention.

Fig. 2 is a fragmentary plan view as indicated by the arrow A of Fig. 1, showing the templet in operative relation with the rotary cutter-carrging grader.

A grading mac ine is shown denoted in a general way by the numeral 5, said grading machine having wheels 6 which travel upon side forms i between which the grade 8 is prepared. The machine 5 embodies a rotary grader 9 elongated in a direction transverse to the line of travel of the machine, said rotary grader 9 embodying cutters 10 adjustably held by appropriate clamping means 11 ,so that they may be adjusted toward and from the axis of the. ader 9, thereby so changing the shape of t e latter as to impart the desired cross-sectional shape to the grade 8. The earth excavated by the rotary grader 9, is rearwardly thrown over a guide plate 12 onto a table 13 and is removedfrom' the latter by a conveyor 14. j v I The gist of the present invention relates to a novel means to facilitate adjustment. of the cutters 10 rather than to any features ofthe machine so far briefly described. The templet is in the form of a suitable bar 15 which is uni-directional with the rotary grader 9, and is substantially parallel with the axis'of the latter. This bar' 15 isresilientand provision is made for sprin 'ng it into different shapes, according to the s ape which-must be imparted to the grade 8, by the cutters 10. In-the present showing, adjusters 16 which are dis- .posedtransverse to the bar 15, are connected at one end with the latter, said, adjusters being spaced apart along the length of said bar. The other ends of the adjusters .16 are connected with the frame of the machinec5, and the connections are such thatthe adjusters 16 and the bar 15 may be moved into and 'out'of operative relation'withthe rotary grader 9, as shown by the full and dotted lines of Fig. 1. The adjusters 16 are lon 'tudinally extensible and retractible and once by adjustin them, the shape of the bar 15 may be changed as required, and when all of-the cutters '10 are adjusted so that theyfwill come into contact with the bar 15 or substantially in contact therewith, it is known that the-necessary .accurate adjustments of said cutters, havebeen attained. 1

Each adjuster 16 preferably consists or two rods 17 and 18 connected'bya turn-buckle 19, the rod 17 being suitably connected at 20 on with the bar 15, while the rod 18 is pivotally connected at 21 with the frame of the machine 5. This frame, in the construotionbshown, embodies a transverse bar 22 on which all of the adjusters 16 are pivotally mounted by the means 21. a v

Normally, the bar 15 andthe adjusters 16 occupy the positions shown in dotted lines in Fig. 1 and hence, they are entirely out of the path of therotary grader 9. a When the out ters 10 of this grader are to be adjusted however, the adjusters 16 and bar 15 are swung to the position shown in full lines inv Figs. 1 and 2, and b means of said adjusters, the

shape of the ar 15 is changed according lto the shape to be im arted to the grade 8.

arts may be hel in the full line position of Eigs. 1 and 2, either by friction 1n the connections 21, or by other appropriate means, and it will be seen that when all of the cutters 10 are so adjusted that they 'will just clear the bar 15, the grader 9 will have been properly conditioned for accurately cuttin the grade.

Excellent results are obtainab e from the details disclosed and they may therefore be followed if desired. However, within the scope of the invention as claimed, numerous variations may be made.

' I' claim 1. In a grading machine having a rotatable grader provided with-adjustable cutters for changing its shape according to the transverse shape desired for the grade; a templet carried by the machine to assist in accurately adjusting said cutters.

2. In a grading machine having a rotatable grader provided with adjustable cutters for changing its shape according to the transverse shape desired for the grade; a templet to assist in accurately adjusting said cutters, and means mounting said templet on the machine for movement into and from operative relation with said rotatable grader.

3. In a grading machine having a rotatable grader provided with adjustable cutters for changing its shape according to the transverse sha pe desired for the grade; a templet toassist 1n accurately adjusting said cutters,

and means pivotally mounting said templet on the machlne and allowing swinging of said tem let into and from operative relatlon with sai rotatable der.

4. In a grading machine havinga' rotatable grader provided with adjustable cutters for changing its shape according to the transverse shape desired for the grade; B. templet to assist in accurately adjustin said cutters, and adjusting means for changing the shape of said temslet according to the shape desired for the gra e.

5. In a ading machine havin a rotatable gra er provided with adjusta lo cutters for changing its shape according to the transverse sha desired for the grade; a templet carri by the machine'to assist in accurately adjusting said cutters, and adjusting means for chan g the shape of said templet according to t the grade.

6. In a gradin machine having a rotatable grader provid with adjustable cutters for changing its shape according to the transverse sha desired for the grade; a templet to assist maccurately adjusting said cutters, adjusting means connected with said templet e shape desired for for changin the shape of the latter according to the s ape desired for the grade, and means mounting said adjusting means on the machine.

7.. In a grading machine having a rotatable grader provided with adjustable cutters for changing its shape according to the transverse shape desired for the grade; a templet to assist in accurately adjusting said cutters,

adjusting means connected with said templet for changin the shape of the latter according to the s ape desired for the grade, and means movably mounting said adjustln means on the machine and allowing suc movement of said adjusting means an templet as to position the latter either in or out of operative relation with said rotatable grader.

8. In a gradin machine having a rotatable grader elongate in a direction transverse to the ath of travel of the machine said rotata le grader-being provided with adjustable cutters for changing its shape according to the shape desired for the grade, a resilient templet bar carried by the machine, said templet bar being substantially co-extensive in length with said rotatable grader and substantially parallel with the axis thereof and serving as a guide when adjusting said cutters, and means for springing said bar into different shapes according to the shape desired for the grade.

9. In a gradin machine having a rotatable grader elon ate in a direction transverse to the ath 0 travel of the machine said rotata le grader being provided with adjustable cutters for chan mg its shape according to the shape desire for the grade, a resilient templet bar substantially co-extensive in length with said rotatable grader and substantiall parallel with the axis thereof said templet ar serving as a ide when adjusting said cutters, and ongitudinally extensible and retractible adjusters transverse to said templet bar and connected at one end with longitudinally spaced ortions of the latter,.the other ends of sai adjusters being connected with the frame of themachine, whereby said adjusters may be used to vary the shape of the templet bar according to theshape desired for the grade.

10. In a grading machine having a roadjusting said cutters, longitu inally extensible and retractible adjusters transverse to said templet bar and connected at one end with longitudinally spaced portions of the Lessee! I beset smfl means mcvsbly mounting the ether ends of said edju op the frame of "fake machine; said means ellewm such movemeet cf said adjusters and p et bares position the letter either in or out of operaibive relation Wish said reeeteble greder, seitl edjuseers being apex-able fie vary the shape cit fthe (temples be? according to the shape desired for the gq'ede.

11. An adjustable temples comprisin en elcngated bar, ed'usfing devices as laterally frcm e11 ced apart elcng the length 01 said her, eec of said adjusting devices embodying 3W0 end sections and a tum buckle cemecfing said end sections, the end Y secsiezas at ene end of said adjusting devices connected fie one side cf seicl 2r, end e scpyerfi to which the end sectiens m she eeher ens of seid edjusfing devices ere conneceei.

12. An edjus bebie itemplet cempfisin an elongated bar, edjusiing devices ex t-en 'ing lctez'aily frem and spaced eperc along eke len th of said her, each of said adjusting devlces bemg connected at cne end with cue side of said bar, end -bmckets to which the other ends of said edgusting devices are pi -n oterl on axes extending lengltudinefiy of said her, sci brackets having portions fee as techment e, 'supgccrise Kn i-esfimony whereof I efix my simacturev BENJAMKN H. sLsss. 

